Side face welding type composite pole block

Abstract

The utility model relates to the technical field of pole blocks, and discloses a side surface welding type composite pole block, which is characterized by comprising a first base material and two second base materials, the two second base materials are respectively arranged on two sides of the first base material, the first base material and the second base materials are fixedly butted in a surface fitting manner, and the first base material and the second base materials are connected in a surface fitting manner. Forming a composite butt joint surface, and fixing the first base material and the second base material into an integral structure through the composite butt joint surface; the two second base materials are fixed to the two sides of the first base material in a butt joint mode through surface attachment, so that a fixed integrated structure is formed, the structure is simple, limitation of an up-down layered composite structure is avoided, batch production is easy to achieve, the production efficiency is high, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model patent relates to the technical field of pole blocks, specifically, to a side-welded composite pole block. Background Art

[0002] The pole block is the connection terminal in the battery. It is arranged in the battery top cover and is the component that connects the inside and outside of the battery, enabling the battery to realize the function of charging and discharging.

[0003] Common composite pole blocks are generally formed of copper and aluminum. The mass-produced composite pole blocks are formed by punching a composite plate. The composite plate has an aluminum layer and a copper layer arranged in upper and lower layers. The shape, position and size of the copper layer and the aluminum layer on the pole block are determined by the composite plate.

[0004] The composite pole blocks in the prior art are formed by punching out composite plates, but have the problems of low raw material utilization and limited space for cost optimization, resulting in high cost of the composite pole blocks. Utility Model Content

[0005] The utility model aims to provide a side-welded composite pole block, aiming to solve the problem of high cost of composite pole blocks in the prior art.

[0006] The utility model is implemented as follows: a side-welded composite pole block includes a first substrate and two second substrates, wherein the two second substrates are respectively arranged on both sides of the first substrate, and the first substrate and the second substrate are surface-fitted and fixedly butted to form a composite butt joint surface, and the composite butt joint surface fixes the first substrate and the second substrate into an integrated structure.

[0007] Furthermore, the first substrate and the second substrate are fixedly connected to form an integrated structure by friction stir welding.

[0008] Furthermore, the composite butt joint surface is arranged in a curved shape.

[0009] Furthermore, the composite butt joint surface is arranged in a planar shape.

[0010] Furthermore, the periphery of the composite butt joint surface forms a peripheral butt joint contour, and the first substrate and the second substrate are arranged flush at the peripheral butt joint contour.

[0011] Furthermore, the first substrate has first side surfaces on both sides respectively, the second substrate has second side surfaces facing the first side surfaces, and the first side surfaces are in surface contact with the second side surfaces.

[0012] Furthermore, the first substrate is a copper substrate, and the second substrate is an aluminum substrate.

[0013] Furthermore, a pole hole is formed in the middle of the first substrate.

[0014] Furthermore, a step ring is provided on the inner side wall of the pole hole, and the step ring is arranged around the circumference of the pole hole.

[0015] Furthermore, a pole is protruding from the middle of the first substrate, and the pole is integrally formed with the first substrate.

[0016] Compared with the prior art, the side-welded composite pole block provided by the utility model has two second substrates fixed on both sides of the first substrate by surface bonding, thereby forming a fixed integrated structure. The structure is simple and is not restricted by the upper and lower layered composite structures. It is easy to realize mass production, has high production efficiency and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the side-welded composite pole block provided by the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the side-welded composite pole block provided by the utility model;

[0019] In the figure: a first substrate 100 , a pole hole 101 , a step ring 102 , a pole 103 ; a second substrate 200 ; and a peripheral docking profile 300 . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.

[0024] The side-welded composite pole block includes a first substrate 100 and two second substrates 200 whose materials are different from those of the first substrate 100. The two second substrates 200 are respectively arranged on both sides of the first substrate 100. The first substrate 100 and the second substrate 200 are surface-fitted and fixedly butted to form a composite butt joint surface. The composite butt joint surface fixes the first substrate 100 and the second substrate 200 into an integrated structure.

[0025] The surface bonding between the first substrate 100 and the second substrate 200 refers to the first substrate 100 and the second substrate 200 being surface-to-surface bonded and fixedly connected via a flat surface, a curved surface or other types of surfaces.

[0026] In the side-welded composite pole block provided above, the two second substrates 200 are fixed on both sides of the first substrate 100 by surface bonding, thereby forming a fixed integrated structure. The structure is simple and is not restricted by the upper and lower layered composite structure. It is easy to achieve mass production, with high production efficiency and low manufacturing cost.

[0027] The periphery of the composite butt joint surface forms a peripheral butt joint profile 300 , and the first substrate 100 and the second substrate 200 are fixedly connected to form an integral structure by friction stir welding. Of course, they can also be welded and fixed by other welding methods.

[0028] Friction stir welding refers to using the heat generated by the friction between a high-speed rotating welding device and the first substrate 100 and the second substrate 200 to partially melt the first substrate 100 and the second substrate 200. When the welding device moves forward along the peripheral docking profile 300, the plasticized material flows from the front to the rear of the welding device under the action of the rotating friction force of the welding device, and forms a dense solid phase weld under the extrusion of the welding device.

[0029] Friction stir welding has many advantages as follows:

[0030] 1) During the welding process, the residual stress is relatively low, and the first substrate 100 and the second substrate 200 are not easily deformed;

[0031] 2) It can complete welding of longer welds, large cross-sections and different positions at one time;

[0032] 3) It is convenient to realize mechanized and automated operations, and has low requirements on the working environment;

[0033] 4) No need to add welding wire, no need to remove oxide film before welding, no need for protective gas, and low welding cost;

[0034] 5) Can weld materials sensitive to thermal cracks, suitable for welding dissimilar materials:

[0035] 6) The welding process is safe, pollution-free, smoke-free, radiation-free, etc.

[0036] In some embodiments, the composite butt joint surface is arranged in a curved shape, or the composite butt joint surface is arranged in a flat shape, which can be determined depending on the product structure and process requirements.

[0037] The composite docking surface is arranged in a curved shape, which can increase the docking area and increase the peripheral docking profile 300. After the first substrate 100 and the second substrate 200 are welded, the formed composite pole block structure is more stable, but the welding difficulty will be increased.

[0038] The composite docking surface is arranged in a planar shape, which is more convenient for the surface bonding between the first substrate 100 and the second substrate 200, and the peripheral docking profile 300 after docking is linear, which is convenient for welding equipment to weld the first substrate 100 and the second substrate 200.

[0039] The first substrate 100 and the second substrate 200 are arranged flush at the peripheral butt joint profile 300 , so that the welding end can perform friction stir welding between the first substrate 100 and the second substrate 200 .

[0040] The first substrate 100 has first side surfaces on both sides respectively, and the second substrate 200 has a second side surface facing the first side surface. The first side surface and the second side surface are surface-fitted and abutted against each other, so that the manufacture of the composite pole block is facilitated.

[0041] When the composite pole block is used as the upper pole block in the battery top cover, a pole hole 101 is formed in the middle of the first substrate 100. In some embodiments, the first substrate 100 is a copper substrate, the second substrate 200 is an aluminum substrate, and when the busbar is made of aluminum, it is welded to the aluminum substrate of the upper pole block.

[0042] The inner side wall of the pole hole 101 is provided with a step ring 102 , and the step ring 102 is arranged around the circumference of the pole hole 101 to facilitate the matching between the poles 103 of the upper pole block and the lower pole block.

[0043] When the composite pole block is used as the lower pole block in the battery top cover, a pole post 103 is protruded from the middle of the first substrate 100, and the pole post 103 is integrally formed with the first substrate 100. In some embodiments, the first substrate 100 is a copper substrate, and the second substrate 200 is an aluminum substrate. When the cell pole lug is made of copper, it is welded to the copper substrate of the lower pole block.

[0044] When the upper pole block and the lower pole block are used in the battery top cover, the top of the top cover sheet is provided with an upper plastic, the bottom of the top cover sheet is provided with a lower plastic, a mounting hole is provided in the top cover sheet, the upper pole block is placed on the top of the upper plastic, and the lower pole block is arranged at the bottom of the lower plastic. The pole 103 of the lower pole block passes through the lower plastic, the through hole and the upper plastic, and is inserted into the pole hole 101 of the upper pole block, and is welded to the upper pole block, and a sealing ring is provided between the pole 103 and the mounting hole.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Side-welded composite pole block, It is characterized in that It includes a first substrate and two second substrates, wherein the two second substrates are arranged on both sides of the first substrate respectively, and the first substrate and the second substrate are bonded and fixedly butted against each other to form a composite butt joint surface, which fixes the first substrate and the second substrate into an integrated structure.

2. The side-welded composite pole block according to claim 1, It is characterized in that The first substrate and the second substrate are fixedly connected to form an integrated structure by friction stir welding.

3. The side-welded composite pole block according to claim 1, It is characterized in that The composite butt joint surface is arranged in a curved shape.

4. The side-welded composite pole block according to claim 1, It is characterized in that The composite butt joint surface is arranged in a plane.

5. The side-welded composite pole block according to any one of claims 1 to 4, It is characterized in that The outer periphery of the composite butt joint surface forms an outer peripheral butt joint profile, and the first substrate and the second substrate are arranged flush at the outer peripheral butt joint profile.

6. The side-welded composite pole block according to any one of claims 1 to 4, It is characterized in that The first substrate has first side surfaces at both sides respectively, the second substrate has second side surfaces facing the first side surfaces, and the first side surfaces are in surface contact with the second side surfaces.

7. The side-welded composite pole block according to any one of claims 1 to 4, It is characterized in that The first substrate is a copper substrate, and the second substrate is an aluminum substrate.

8. The side-welded composite pole block according to any one of claims 1 to 4, It is characterized in that A pole hole is formed in the middle of the first substrate.

9. The side-welded composite pole block according to claim 8, It is characterized in that The inner side wall of the pole hole is provided with a step ring, and the step ring is arranged around the circumference of the pole hole.

10. The side-welded composite pole block according to any one of claims 1 to 4, It is characterized in that A pole is protruding from the middle of the first substrate, and the pole is integrally formed with the first substrate.

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